Insulating-conduit for electric wires.



PATENTED' AUG. 27, 1907.

INSULATING GONDIT FOR ELECTRIC WIRES.

APPLICATION FILED DBO. 3. 1906. 4

II'IIIIIIIIII [Il UNITED STATES PATENT oEEICE.

ANTHONY P. EINSKY, QE HoBoKEN, NEW JERSEY.

^ -INsULATINecoNnUrT non ELECTRIC wrnns.

-To all whom concern:

' Be itllmown that'l, ANTHONY l'. HINsnY, A a citizen ofthe United States, and' residing at Hoboken, in the county of Hudson and State ofNew Jersey, have infvented certain newand'useful Improvements in Insuloting- Conduite forElectric Wires, of which the following is a specication, such as .will enable those skilled in thefart to which it appertains to make and use the This invention relates to conduits forelectricwires,v

and theobject4 thereof is to provide an improved'de- Vvice of this classthrough which an electric wire or wires may be'passed in .the usual man-ner and which will. thoroughly cover and protectsaid wire or wires and at the same time be more flexible and practical in use than other devices of this class as usually constructed. The invention is fully disclosed in the`following specification, of which the accompanying drawing forms a part, in which the separate parts of my im'- provement are vdesignated by suitable reference characters in'each of the views, and in which;-

ving material.'4

Figure 1 is v...side View f asbrous tube which formt paper, and in the operation offormingthe said tube itis corrugated or' ribbed transversely or circumferentially as shown at a2 in Fig. 2 so as to form corresponding'- circumferential grooves, .the inner surface ofthe tube,

being left smooth and even-throughout. The tube a,

corrugated or ribbed circumferentially as shown in Fig. 2, is provided with a fabric coveringb of strong heavy fibrous material, and inpractice, the tube a before the fabric covering b' is placed thereon is saturated and 4covered with a coating of `insulating material, and*y after the fabric covering b is placed on said tube, said covering is4 also saturated with and covered by insulin- It will be understood that the insulating material thoroughly preserves and protects both vthe'tube a Specification of Letters Patent. d Appumimfuaa member 3,1906. Serin si. 345,984.

Patented Aug. 27, 1 907.

and the fabric covering b and rendersthe conduit impervious to water or other liquid substances.l 1

The methodiiof making my improved tubular conduit I for electric wires w"is described in an application for Letters Patent led by me of equal date herewith, in which a machine for carrying said method into effect and for forming my improved conduit is shown and described;

The materialemployed for saturating and covering; the tube a and for saturating and covering the fabric .covering b so as to rendez the same impervious to moisture and at the same time give the conduitinsulating qualities may consist of any of the liquid compositions now used for 'this purpose, andthe application and use of which are well lgnown. A conduit of the class speci# ing qualities necessary, is also strong and durable and muchv more fiexible ,than is ordinary with devices of. this class as usually constructed, the flexible qualities beinggiven by corrugating the inner-tube c transversel or circumferentiallyin the manner described-.

In the'process of making or forming the tube a and providing the outer-surface thereof with circumferential corrugations or ribs and corresponding grooves, Athe inner surface of said tube is leftsmooth and ,even and the result is that the conduit when finished is' ilexibleand the inner walls thereof being smooth and even through *so fied made as described, while possessing all the insulati out, the process of passing wires or cablestherethrough is not interfered with in any way.. My invention is' notlimited to any particular method or means for mak-A ing the circumferential corrugations or ribs and corresponding grooves in the outer surface of the tube an'd this maybe done in any desired manner.'

Having'fully described my invention, what I claim as new and desire to secure by Letters Patent, is:-

A tubular conduit for electric wires composed o! fibrous material and provided in its outer surface with circumferentlahcorrugations or ribs and corresponding grooves, the

inner walls'ot the tube being smooth und eventhroughout, i

the said tube ot fibrous material being also providedwith a fibrous covering, and said tube and brons covering `being y saturated with insulating and preservative material.

In testimony that I claim the foregoing as my` i/nvention I have signed my name in presence'of the'subscrbing witnessesthis 30th day of November 1906.

ANTHONY P. amsn. 

